#include <stdio.h>
struct
  {int year;
   int month;
   int day;
  }date;
int main()
 {int days;
  printf("input year,month,day:");
  scanf("%d,%d,%d",&date. year,&date.month,&date.day);
  switch(date.month)
  { case 1: days=date.day;    break;
    case 2: days=date.day+31; break;
    case 3: days=date.day+59; break;
    case 4: days=date.day+90; break;
    case 5: days=date.day+120; break;
    case 6: days=date.day+151; break;
    case 7: days=date.day+181; break;
    case 8: days=date.day+212; break;
    case 9: days=date.day+243; break;
    case 10: days=date.day+273; break;
    case 11: days=date.day+304; break;
    case 12: days=date.day+334; break;
   }
  if ((date.year %4== 0 && date.year % 100 != 0
      ||date.year % 400 == 0) && date.month >=3)  days+=1;
  printf("%d/%d is the %dth day in %d.\n",date.month,date.day,days,date.year);
  return 0;
}



